View Single Post
Old March 19, 2001, 09:19 PM   #5
Mikul
Senior Member
 
Join Date: March 21, 2000
Posts: 1,396

Left: Normally fired brass Right: Brass from lodged bullet

Mal, that is an excellent suggestion.

I measured the messed up brass, two rounds that fired normally and one that I just pulled. I measured at the neck and in the middle.

FUBAR Brass
neck: 0.378"
mid: 0.374"

Normal Brass #1
neck: 0.382"
mid: 0.389"

Normal Brass #2
neck: 0.381"
mid: 0.390"

Pulled Brass
neck: 0.378"
mid: 0.376"

Of more interest than the size comparison (fired rounds were 0.004" wider at neck and 0.016" wider at the middle) was the fact that both fired rounds are wider in the middle than at the neck while the unfired (pulled) brass was narrower, just like my problem load.

I have never heard about primers deforming when they fire and then getting pushed back when the round fires. My manual simply shows a deformed primer like mine to be a sign of overpressure.

Perhaps I don't need to pull the 500 jacketed rounds, but I'm certainly going to weigh them all.

BTW, what didn't seal in the chamber? The brass?
Mikul is offline  
 
Page generated in 0.02198 seconds with 8 queries